Duct connection assemble between a branch duct and a main duct

Details Duct connection assemble between a branch duct and a main duct Duct connection assemble between a branch duct and a main duct

2006-03-07

2006-03-07

Dunwoody, Aaron (Department: 3679)

Pipe joints or couplings

End to side or plate

Saddle-type clamp

C285S180000, C285S199000, C285S198000, C285S903000

Reexamination Certificate

active

07007980

ABSTRACT:
A duct connection assemble, whereby upon connecting a saddle flange (2a) of the joint duct (8) to the main ribbed duct (3) through the communication hole (1b), the rubber sealant (1) is interposed between the saddle flange (2a) and a circumferential area of the communication hole (1b) so that protuberances (2b) uniformly press the rubber sealant (1) through the recesses (1d) to tightly engage the saddle flange (2a) against an outer surface of the main ribbed duct (3) through rib-fitting grooves (1a) and the water sealing small projective rings (1c). The joint duct (2) is brought into an elastical engagement with the main ribbed duct (3) to achieve a good water sealing action for an extended period of time.

REFERENCES:
patent: 1263223 (1961-10-01), None
patent: 1-307594 (1989-12-01), None
patent: 3-107697 (1991-05-01), None
patent: 3-121397 (1991-05-01), None
patent: 7-119884 (1995-05-01), None
patent: 4-194489 (1995-09-01), None
CD-ROM of the specification and drawings annexed to the request of Japanese Utility Model Application No. 35296/1992 (Laid-open no. 94597/1993), (Sekisui Chemical Co., Ltd.), Dec. 24, 1993.

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